Lippert 8800 RV Window | Vertical Slider Square Corner | 18"×22" | Kit

Replace or add a vertical slider RV window with the Lippert 8800 Series RV Window — Vertical Slider, Square Corner Frame, 18" × 22". Complete replacement kit with tempered tinted glass, aluminum corrosion-resistant frame, integrated water weep system, and everything you need for installation. Proudly cut, tempered, and assembled in Indiana.

Vertical Slider Design

Vertical sliding operation — the window slides open vertically for ventilation without protruding outside the RV or requiring cabin swing clearance. Includes a fine mesh screen to keep insects out while allowing airflow.

Square Corner Frame Style

This is the square corner frame variant — a cleaner, more angular aesthetic used in specific RV builds. If your existing installation uses rounded corners instead, see the radius frame variant.

Heavy-Duty Construction Built to Last

• Tempered glass — resists cracking, chipping, and shattering
• Tinted glass — blocks sunlight, reduces heat, and enhances privacy
• Aluminum frame — resists corrosion and extends window lifespan
• Latching mechanism and sealing gaskets keep your RV secure and dry
• Built-in water weep system directs water away from the window

Energy Efficiency Benefit

Tinted glass and quality seals help maintain comfortable interior temperatures — reduces reliance on heating and cooling, saving energy and costs.

⚠️ Sizing — Rough Opening vs Actual Window

• Rough opening: 18" × 22"
• Actual window: approximately 3/8" smaller in both directions

⚠️ Wall Thickness Requirement

With the included trim ring: 0.75" or 1.5"
With existing trim ring: 0.5" to 3"

What's Included

• (1) Lippert 8800 Series Vertical Slider window (square corner)
• Black trim ring
• Mounting screws
• Foam seal
• Integrated mesh insect screen

Sold Separately: Window sealant.

Other Sizes in Vertical Slider Square Corner

• 18" × 22" (this listing)
• Lippert 8800 Vertical Slider Square Corner — 18" × 24"

Same Size in a Different Style?

The 18" × 22" opening is also available in other Lippert 8800 window styles:

• Lippert 8800 Horizontal Slider — 18" × 22" (radius frame)
• Lippert 8800 Vertical Slider — 18" × 22" (radius frame)

Match your existing frame style and slider orientation to your installation for a seamless replacement.

Proudly Made in Indiana

Cut, tempered, and assembled in Indiana.

⚠️ Professional Installation Recommended

RV window installation involves working with the exterior wall, weather sealing (sealant sold separately), and trim integration. Installation should be performed by a qualified RV service technician unless you have prior experience with RV window installation.

1-Year Lippert Manufacturer Warranty

Genuine Lippert 8800 Series

Key Features

• Genuine Lippert 8800 Series RV window
• Vertical slider operation with fine mesh insect screen
• Square corner frame
• Tempered tinted glass — safety + heat/sunlight blocking + privacy
• Aluminum corrosion-resistant frame
• Built-in water weep system
• Latching mechanism + sealing gaskets
• Rough opening: 18" × 22" (actual window ~3/8" smaller both dimensions)
• Wall thickness compatibility: 0.75" or 1.5" (with included trim ring); 0.5"-3" (using existing trim ring)
• Complete kit includes: Window, black trim ring, mounting screws, foam seal, insect screen
• Sealant sold separately
• Made in Indiana
• Also available in 18" × 24" square corner and 18" × 22" radius (horizontal + vertical)
• Backed by 1-year Lippert manufacturer warranty

Specifications

• Brand: Lippert
• Series: 8800
• Type: Vertical Slider RV Window
• Frame Style: Square Corner
• Rough Opening: 18" × 22"
• Actual Window Dimensions: Approximately 3/8" smaller in both directions
• Glass: Tempered, tinted
• Frame Material: Aluminum (corrosion-resistant)
• Trim Ring: Black (included)
• Insect Screen: Fine mesh (included)
• Water Management: Built-in weep system
• Wall Thickness (Included Trim Ring): 0.75" or 1.5"
• Wall Thickness (Existing Trim Ring): 0.5" to 3"
• Includes: Window, trim ring, mounting screws, foam seal, insect screen
• NOT Included: Window sealant (sold separately)
• Country of Origin: Indiana, USA
• Same-Style Size Options (Vertical Slider Square Corner): 18×22, 18×24
• Same-Size Alternates: Horizontal Slider Radius 18×22, Vertical Slider Radius 18×22
• Warranty: 1-year Lippert manufacturer warranty